docs: def verify_full_extraction():
      """This is an experimental endpoint to simultaneously verify data
      statistics and extraction for training, test, and holdout datasets.
      With this, the other three verification methods will no longer be
      necessary.
      """
      path = functions.get_path_from_query_string(request)
  
      if request.method == 'POST':
          rqtasks.extraction_data_statistics(path)
  
      with functions.DBContextManager(path) as session:
          extraction = session.query(models.Extraction).first()
          return jsonify(extraction.data_statistics)